My father, presently 83 years ago, has always had trouble with his legs, i.e. aching legs. Now he can only walk 3 blocks and has to stop walking, too uncomfortable. This goes back 45 - 50 years. He smoked for about 20 years but gave that up in 1973. He has had trouble with his back and a hip for many years (50 years). Also he has had bouts with sciatica going back to the late 60 s.Now he can only walk 3 blocks and has to stop, it s too uncomfortable. Thanks for your help. Thanks so much for your help.